Rh(III)-Catalyzed Cascade Annulation/C–H Activation of <i>o</i>-Ethynylanilines with Diazo Compounds: One-Pot Synthesis of Benzo[<i>a</i>]carbazoles via 1,4-Rhodium Migration
作者:Songjin Guo、Kai Yuan、Meng Gu、Aijun Lin、Hequan Yao
DOI:10.1021/acs.orglett.6b02534
日期:2016.10.21
A Rh(III)-catalyzed cascade annulation/C–H activation of o-ethynylanilines with diazo compounds has been developed. This concise method allows for the rapid formation of a number of benzo[a]carbazoles in high yields, exhibiting good functional group tolerance and scalability. The key to the success of this approach involves one C–N bond and two C–C bond formation, and an aryl-to-aryl 1,4-rhodium migration
已开发了一种重氮化合物催化的Rh(III)催化邻乙炔基苯胺的级联环化/ CH活化。这种简洁的方法可以高产率快速形成许多苯并[ a ]咔唑,表现出良好的官能团耐受性和可扩展性。该方法成功的关键在于一个C–N键和两个C–C键的形成,以及芳基到芳基1,4-铑的迁移。